Nobroker — Home Maintenance Team does not refund the money

My(Girish Routray) property Skanda Sky in Kadubisanahalli was given for rent via No Broker. In this process, I had requested the No Broker team to do some repair work and they had internally enabled the home maintenance team to carry out the work.
The home Maintenance team had shared a quotation of 13540 for installing a few stuffs inside the house consisting of a new water sink(Brand Franke), a Commode seat cover(Brand Cera), and a few hydraulic hinges in the kitchen cupboards.
But post the work completion, I came to know from the tenants that the Home Maintenance team had installed local brands and not the one I had paid for.
Now I am trying to get hold of them for 1 month and I am not getting any response from them. Prabhanshu Kumar was the person who shared with me the brands and their quotations.
This is really pathetic service from the No Broker team that they are not able to justify the customer for the work he had paid for.
I want this to be resolved asap and the extra money taken by No Broker should be refunded back to me without any delay.
Registered Number - [protected]
Overseas Number - +[protected]